Toys & mechanisms

Tower of Hanoi — Parametric Educational Stacking Puzzle

Classic recursion puzzle: move a graduated stack of discs across three pegs, one at a time, never a bigger disc on a smaller one. Parametric (n_discs 3–9, default 5); print each disc a different colour for a rainbow set and the base in wood-fill PLA for the grain shown. Kid-safe: smallest disc above the choke gauge, every edge filleted. Prints flat, no supports.